Valve-gear



(No Model.)

0. E. KIMBALL.

VALVE GEAR.

Patented Nov. 23, 1886.

I mum M01? W /M .Zdmzwm Q6 ATTORNEY WITNESSES.- @JW ZI/M N. PEYERS.Phclcrliflwgnphnr. Walhingwn. D, C.

U ITED STATES CHARLES E. KIMBALL,

' VALVE- PATENT OFFICE,

OF ANAMOSA, IoWA.

GEAR.

SPECIFICATION forming part of Letters Patent No. 353,032, dated November23, 1886.

Application filed April 14, 1886.

SerialNo. 168,868. (No model.)

To all whom it may concern:

Be it known that I, CHARLES E. KIMBALL, of Anamosa, in the county ofJones and State of Iowa, have invented certain new and usefulImprovements in Cut-Otf Governors and Valve -Gear for Steam Engines,which improvements are fully set forth in the following specification,reference. being had to the accompanying drawings.

The object of my invention is to work a cutoff by means of abalance-wheel or by weights attached rigidly to a rocking bar 'orstem asan axis, which rocking stem operates the cutoff valves, whereby theadmission of steam to the cylinder of a steamengine shall be controlledand regulated.

Referring to the drawings, Figure 2 is a side view of part of anengine-cylinder surmounted with avalve-box fitted with my improvement.Fig. 1 is a front or end view of the balancewheel and the parts used tooperate the same.

The lettering of the parts is thesame throughout the drawings.

K is the engine-cylinder, surmounted by the valve-box I. a

B is a. rocking stem or rod which works thecut-off valve. The stem orrod B is rigidly secured to the axis of the balance-wheel A.

F is the eccentric-rod, pivoted at its outer end by the stud G to therocking arm G,"which Works the sleeve D, by which the main valve of theengine is operated.

To the balancewheel A is secured one end of the spring E, which at itsother end is connected to the arm 0 by the adj usting-screw H, whichengages with the plate L, secured to said spring E, so that byturuingthe screw H any desired tension of the spring E can be ob'-tained. I

In place of the balance-wheel A, may be used any one or moreof thesegments thereof as, for instance, those marked X Y Z, or any ofthem-with their corresponding spokes and hub, such segments forming aweighted arm or arms radiating from the axis and secured to said springE. l

The operation of myinvention is as follows:

When the engine is started, the arm 0, being connected with theeccentric-rod F, is swung back and forward by the movement of saideccentric-remand carries with it the end of the spring E, which issecured to said arm 0. The spring E as it is moved pulls upon andcarries with it the balance-wheel A, causing it to partially revolveupon its axis, and thus to turn the stem or rod B; but the balance-Wheel A, having a heavy rim, will not follow closely the movement of thearm 0, because of the inertia of said wheel A and because the spring Ewill, when pulled by the'arm C, stretch or give until the inertia of.the hal ance-wheel A is overcome and the balancewheel is started. Whenstarted, the momenturn of the balance-wheel or of the weighted arms, ifthey be used instead, will tend to carry the balance-wheel or armsfarther than the arm 0 moves, and until the tension on the springE,which pulls in unison with the movement of the arm O, overcomes themomentum of the wheel or arms and reverses its motion, whichroscillatingof said balance-wheel, being constant, will alternately open and closethe cut-off valves, thus governing'and regulating the cut-off asdesired, the constant tendency diminished, and the motion of the enginecorrespondingly accelerated or retarded, as desired.

The spring E may be either in the form shown or it may be a coiledspring,such as is used in the balance wheel of a-watch, or any otherform of spring, as desired, and the balancewheel A may be weighted inany part to give greater efficiency to its working under diliferentcircumstances.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s

1. The spring E and the balance-wheel A,

.as shown, and means for operating the same,

in-combination with a stem or rod to operate the cut-off valves of asteam-engine connected withand operated by said balance-wheel A, wherebythe action and motion of the cut-off valves is governed and regulated,subsiantiallyas shown and described.

4. In a steam-engine, the combination of the eccentric-rod F, stud G,arm 0, sleeve D.

2. In a steam-engine, the combination of spring E, adjusting-screw H,plate L,weighted the eccentric-rod F, stud G, arm 0, spring E, 5balance-wheel A, and stem B, substantially as and for the purposedescribed.

arms X Y Z, (or any of said arms,) radiating 15 from the axis, and stem13, to operate the cutoff valves, substantially as and for the purpose3. In a steam -engine, the combination of described.

the eccentric-rod F, stud G, arm 0, sleeve D,

spring E, adjusting-screw H, plate L, balance- 10 wheel A, and 'stem B,substantially as and for the purpose specified and described.

CHARLES E. KTMBALL. Witnesses:

G. F. GOODING, WM. D. COPPERNOLL.

